GURPS Dice

[g4695034]

A function for GURPS dice would be handy.
GURPS uses a roll-under system with a dice pool of 3d6. Degrees of success/failure is counted for every step away from the target number.
Example 1:
[User] g 13 Roll to hit
[Rollem] User, 3d6 => [2 + 3 + 2] => 7, Success by 6
Example 2:
[User] g 10 Roll to dodge
[Rollem] User, 3d6 => [3 + 6 + 2] => 11, Failure by 1